Abstract
The fatigue life of offshore steel structures in high-strength
steel is studied. The material used has a yield stress of 800-1000
MPa and high weldability and toughness properties. Of special
interest is the fatigue life under a realistic stochastic loading.
In the experimental part of the investigation, fatigue test series
were carried out on both full scale tubular joints and smaller
welded plate test specimens in high-strength steel as well as in
conventional offshore structural steel. This paper gives a summary
of the main results presented in two recent research reports [15,
16], from these investigations. A comparison between constant
amplitude and variable amplitude fatigue test results shows
shorter fatigue lives in variable amplitude loading than should be
expected from the linear fatigue damage accumulation
formula.Furthermore, in general longer fatigue lives were obtained
for the test specimens in high-strength steel than those obtained
in corresponding tests on joints in conventional offshore
structural steel.
| Original language | English |
|---|---|
| Journal | Welding in the World |
| Volume | 41 |
| Issue number | 4 |
| Pages (from-to) | 328-342 |
| ISSN | 0043-2288 |
| Publication status | Published - 1998 |